/Engine/Plugins/Interchange/Runtime/Source/Nodes/Public/InterchangeSceneNode.h
Get which asset, if any, a scene node is instantiating. Return false if the Attribute was not set previously.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Interchange | Node | Scene") bool GetCustomAssetInstanceUid ( [FString](API\Runtime\Core\Containers\FString) & AttributeValue ) const